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Finding the Fourth Proportional to 171,617.40, 257,348.34 and 111,586.68

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Solution

The fourth proportional to 171,617.40, 257,348.34 and 111,586.68 is: 167,329.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,617.40 : 257,348.34 = 111,586.68 : x
  2. Step 2: Convert to fraction form
    171,617.40/257,348.34 = 111,586.68/x
  3. Step 3: Cross multiply
    171,617.40x = 257,348.34 × 111,586.68
  4. Step 4: Simplify right side
    171,617.40x = 28,716,646,864.11
  5. Step 5: Solve for x
    x = 28,716,646,864.11/171,617.40
  6. Step 6: Final answer
    x = 167,329.46

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.